# Hilda Synthesizer

> Complex Oscillator Synth

Canonical page: [https://chrome-stats.com/d/id6447191659](https://chrome-stats.com/d/id6447191659)

## Overview

- **ID:** `id6447191659`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Bram Bos
- **Category:** Music
- **Rating:** 4.90 / 5 (57 ratings)
- **Version:** 1.3.1
- **Last updated:** 2025-03-05
- **First published:** 2023-05-04
- **Size:** 6.44 MB
- **Data as of:** 2026-09-18
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/hilda-synthesizer/id6447191659)
- **Website:** [https://ruismaker.com](https://ruismaker.com/)
- **Privacy policy:** [https://ruismaker.com](https://ruismaker.com/)

## Description

Hilda is a Complex Oscillator Monosynth, inspired by the most interesting aspects of both west-coast and east-coast synthesis techniques. You'll find a wave folder, lowpass gate, and audio-rate modulations, but also a 12-mode filter and traditional VCA circuit. All parts of the instrument are carefully circuit-modelled to sound as analog (or digital, where applicable) as possible. It's like a best-of-all-worlds semi modular synth, but without the patch cables.

The unique mix of different synthesis components adds up to a unique sounding electronic instrument, which can be used as a playable synthesizer, a MIDI sequencer and an audio effect for external audio - or any combination of those three. 

- Full Audio Unit compatibility (AUv3 instrument, audio effect and MIDI processor modes supported)
- Universal design (iPhone and iPad; iPad Air 2 or higher recommended)
- Built-in analog style 16 Step MIDI Sequencer with custom scales
- 12 mode filter, based on the Oberheim Xpander design
- Drone mode lets you [partially] bypass the VCA/LPG and just go with the flow
- DIY Lo-Fi digital delay circuit emulation
- Live pads with effects that can be triggered via the UI (or via exposed AU Parameters)
- All synth settings exposed a AU Parameters (for automation and MIDI learning in your host of choice)
- MIDI Processor plugin mode disables synth to save CPU
- Carefully handcrafted by yours truly, to capture the essence of my love for tinkering and experimenting with sound :-)

Find the user manual on ruismaker.com

## Rankings

- #163,142 — Overall

## Review summary

Users consistently praise Hilda Synthesizer for its unique, experimental sounds and hardware-like character, with a deep feature set, engaging sequencer and drone options, and strong cross-genre versatility. The listening experience is described as fun and meditative, and the developer’s proactive support with updates is repeatedly highlighted. A recurring caveat is update-related instability—presets, saving state, and some universal/app behaviors—though later firmware updates have resolved some of these issues for many users. Overall, it’s a creative, high-quality instrument when updates are smooth.

### Pros

- Encourages experimentation with unique, hard-to-reproduce sounds.
- Powerful, feature-rich synth with a hardware-like vibe, delivering versatile sequencer and drone modes.
- Fun and engaging to use across genres; immersive and inspiring.
- Active, responsive developer with regular updates and improvements.

### Cons

- Update-related stability issues: broken presets and save-state problems; background/universal app behavior reported by users.
- Some device-specific inconsistency and quality concerns after updates; although many issues are addressed by firmware updates, problems persist for a subset of users.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6447191659)